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package llm
import (
"bytes"
"encoding/json"
"io"
"net/http"
"strings"
"testing"
"time"
)
func f64p(v float64) *float64 { return &v }
func TestBuildOAChatRequest_TempFallbackAndFields(t *testing.T) {
o := Options{Model: "m1", Temperature: 0, MaxTokens: 42, Stop: []string{"END"}}
msgs := []Message{{Role: "user", Content: "hi"}}
req := buildOAChatRequest(o, msgs, f64p(0.3), false)
if req.Model != "m1" || req.Stream { t.Fatalf("model/stream mismatch: %+v", req) }
if req.Temperature == nil || *req.Temperature != 0.3 { t.Fatalf("expected default temp 0.3, got %#v", req.Temperature) }
if req.MaxTokens == nil || *req.MaxTokens != 42 { t.Fatalf("expected max tokens 42") }
if len(req.Stop) != 1 || req.Stop[0] != "END" { t.Fatalf("stop not propagated: %#v", req.Stop) }
if len(req.Messages) != 1 || req.Messages[0].Content != "hi" { t.Fatalf("messages not copied") }
// stream on
req2 := buildOAChatRequest(o, msgs, f64p(0.3), true)
if !req2.Stream { t.Fatalf("expected stream=true") }
}
func TestHandleOpenAINon2xx_WithAPIError(t *testing.T) {
api := oaChatResponse{Error: &struct{ Message string `json:"message"`; Type string `json:"type"`; Param any `json:"param"`; Code any `json:"code"` }{Message: "bad", Type: "invalid"}}
b, _ := json.Marshal(api)
resp := &http.Response{StatusCode: 400, Body: io.NopCloser(bytes.NewReader(b))}
if err := handleOpenAINon2xx(resp, time.Now()); err == nil { t.Fatalf("expected error for non-2xx with body") }
}
func TestParseOpenAIStream_DeliversChunks(t *testing.T) {
stream := "data: {\"choices\":[{\"delta\":{\"content\":\"Hi\"}}]}\n\n" +
"data: [DONE]\n"
resp := &http.Response{Body: io.NopCloser(strings.NewReader(stream))}
var got strings.Builder
if err := parseOpenAIStream(resp, time.Now(), func(s string){ got.WriteString(s) }); err != nil { t.Fatalf("unexpected error: %v", err) }
if got.String() != "Hi" { t.Fatalf("got %q want %q", got.String(), "Hi") }
}
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